CN103969927B - projection device - Google Patents

Abstract

A projection device comprises an image source, a projection lens and a light splitting module. The image source provides an image beam, wherein the image beam comprises a first sub-image beam and at least one second sub-image beam. The projection lens is configured on the transmission path of the image light beam. The first sub-image beam passes through the light splitting module and is projected on the first imaging surface, the second sub-image beam is reflected by the light splitting module and is projected on at least one second imaging surface, and the first imaging surface and the second imaging surface are not coplanar, wherein the projection lens is configured on a transmission path of the image beam between the light splitting module and the image source.

Description

projection device

technical field

The present invention relates to a display device, and in particular to a projection device.

Background technique

Currently, large-scale images on the market can be generated by multiple monitors or multiple projection devices. For example, in the known large-size picture, a plurality of displays are spliced together to form a large-size picture display device arranged in a matrix, or a group of non-parallel continuous pictures are projected through multiple projection devices.

Because the projection device can produce a large picture with a smaller device, and this large-size picture can be much larger than the size of a general flat panel display, and the large-size picture projected by the projection device can be watched by many people, which helps Meetings, presentations of briefings, or display of teaching materials, projection devices have always played an irreplaceable role in the field of displays. In addition, in recent years, projection devices have gradually become one of the indispensable household appliances in home theaters.

In order to produce a large-scale picture, such as when producing a super-large video picture spliced by M×N video pictures, the known technology is to use M×N projection devices arranged in different positions to project the M×N images respectively. image frames to generate multiple image frames that are not coplanar. However, the use of M×N projection devices means that the overall volume becomes more than M×N times, and the cost also increases at least M×N times.

In addition, regarding the known technologies disclosed in U.S. Patent Publication No. 7798652, U.S. Patent Publication No. 20120206697, and Taiwan Patent Publication No. 201219850, how to generate multiple non-coplanar image frames at low cost has become a manufacturing one of the most urgent problems to be solved.

Contents of the invention

The invention provides a projection device, which can respectively project image frames with non-coplanar planes on different imaging planes.

Other purposes and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

In order to achieve one or part or all of the above objectives or other objectives, an embodiment of the present invention provides a projection device, which includes an image source, a projection lens, and a spectroscopic module. The image source provides an image beam, wherein the image beam includes a first sub-image beam and at least one second sub-image beam. The projection lens is arranged on the transmission path of the image light beam. The first sub-image beam passes through the spectroscopic module and is projected on the first imaging plane along the optical axis of the projection lens, at least one second sub-image beam is reflected by the spectroscopic module and projected on at least one second imaging plane, and the second sub-image beam is reflected by the spectroscopic module and projected on at least one second imaging plane. The first imaging surface and the second imaging surface are not in the same plane, wherein the projection lens is arranged on the transmission path of the image light beam between the light splitting module and the image source.

In an embodiment of the present invention, the above-mentioned first imaging surface includes a curved surface or a plane.

In an embodiment of the present invention, the above-mentioned second imaging surface includes a curved surface or a plane.

In an embodiment of the present invention, the above projection device further includes a first lens group. The first lens group is arranged on the transmission path of the first sub-image light beam, and is located between the projection lens and the first imaging surface.

In an embodiment of the present invention, the above light splitting module includes at least one reflector, and the reflector is arranged on the transmission path of the second sub-image beam to change the transmission direction of the second sub-image beam.

In an embodiment of the present invention, the above light splitting module includes at least one reflector and at least one second lens group. The reflector is arranged on the transmission path of the second sub-image beam to change the transmission direction of the second sub-image beam, and the second lens group is arranged on the transmission path of the second sub-image beam.

In an embodiment of the present invention, the above-mentioned first imaging plane and the second imaging plane are adjacent to each other.

In an embodiment of the present invention, the above-mentioned first imaging plane and the second imaging plane are separated from each other.

In an embodiment of the present invention, the above-mentioned light splitting module is a movable (movable) light splitting module.

In an embodiment of the present invention, the aforementioned image source includes an illumination system and a display plane. The lighting system is used for providing lighting beams. The display plane is arranged on the transmission path of the illumination beam, and is located between the projection lens and the illumination system, wherein the first sub-image beam corresponds to the image displayed on a part of the display plane, and the second sub-image beam corresponds to the display plane The image displayed on another part of the area.

Based on the above, the image beam passing through the beam splitting module can be divided into a first sub-image beam and at least one second sub-image beam. The first sub-image beam is projected on the first imaging surface, and at least one second sub-image beam can be reflected by the beam splitting module and projected on at least one second imaging surface, wherein the second imaging surface is not coplanar with the first imaging surface. In this way, in this embodiment, one projection device can be used to generate multiple non-coplanar images.

Description of drawings

In order to make the above-mentioned features and advantages of the present invention more comprehensible, the following specific embodiments are described in detail with reference to the accompanying drawings.

FIG. 1A is a schematic diagram of a projection device according to an embodiment of the present invention.

FIG. 1B shows a partially enlarged schematic diagram of the image source and projection lens in FIG. 1A .

FIG. 1C is a schematic diagram of a display plane according to an embodiment of the present invention.

FIG. 1D shows a partially enlarged schematic diagram of the optical splitting module in FIG. 1A .

FIG. 1E and FIG. 1F are schematic diagrams illustrating an image projected by a display projection device according to an embodiment of the present invention.

FIG. 2 is a schematic diagram of a projection device according to another embodiment of the present invention.

FIG. 3 is a schematic diagram of a projection device according to another embodiment of the present invention.

FIG. 4 is a schematic diagram of a projection device according to another embodiment of the present invention.

FIG. 5 is a schematic diagram of a projection device according to another embodiment of the present invention.

[Description of main component symbols]

10A, 10C: Second imaging surface

10B: the first imaging plane

100A, 100B, 100C, 100D, 100E: projection device

102: Lighting system

104: display plane

104A, 104B, 104C: Zones

110: image source

112: First sub-image beam

114a, 114b: second sub-image beam

120: projection lens

122, 140, 150: lens

124: Aperture stop

130: Optical splitting module

130-1, 130-2, 130-3, 130-4, 130-5, 130-6, 130-7: Reflectors

142-1, 142-2, 144, 152: lens group

Co: Lighting beam

C1: image beam

C ₁₂₀ : Optical axis

M _A , M _B , M _C : screen

E, E1, E2, E3: observers

detailed description

The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

FIG. 1A is a schematic diagram of a projection device according to an embodiment of the present invention. Please refer to FIG. 1A , the projection device 100A of this embodiment includes an image source 110 , a projection lens 120 and a spectroscopic module 130 . In this embodiment, the projection device 100A is used to project the image light beam C1 onto the first imaging plane 10B and at least one second imaging plane. Here, the two second imaging planes 10A and 10C are taken as an example, but the present invention does not The number of the second imaging surfaces is limited to two.

FIG. 1B shows a partially enlarged schematic diagram of the image source and projection lens in FIG. 1A . 1A and 1B, in this embodiment, the image source 110 provides an image beam C1, wherein the image beam C1 includes a first sub-image beam 112 and at least one second sub-image beam, here the second sub-image beam 114a and 114b as an example. In addition, the first sub-image beam 112 is projected on the first imaging plane 10B through the projection lens 120 , and the second sub-image beams 114 a and 114 b are respectively projected on the second imaging planes 10A and 10C through the projection lens 120 . Specifically, the image source 110 may include an illumination system 102 and a display plane 104 , wherein the illumination system 102 is used to provide an illumination beam Co. The display plane 104 is disposed on the transmission path of the illumination beam Co, and is located between the projection lens 120 and the illumination system 102 to convert the illumination beam Co into an image beam C1.

FIG. 1C is a schematic diagram of a display plane according to an embodiment of the present invention. 1A to 1C, the first sub-image beam 112 in the image beam C1 is projected corresponding to the partial area 104B on the display plane 104, and the second sub-image beams 114a and 114b correspond to the display plane 104 respectively. It is projected from another part of the regions 104A and 104C. In this embodiment, the image displayed in the area 104B of the display plane 104 and the images displayed in the areas 104A and 104C of the display plane 104 can be spliced into an overall picture. In other embodiments, the image displayed in the region 104B of the display plane 104 and the images displayed in the regions 104A and 104C may not be spliced into an overall frame. In detail, the image displayed on the display plane 104 can be divided into multiple frames, wherein each frame can be provided by the areas 104A, 104B and 104C of the display plane 104 respectively, and these frames can come from different parts of the same image source, In order to make the display plane 104 display the overall picture. Alternatively, these images may come from different image sources, so that different regions of the display plane 104 display different individual images. It should be noted here that the present embodiment does not limit the number of regions used to display each sub-image in the display plane 104 and the size of each region occupied by each region.

In addition, the display plane 104 of this embodiment is, for example, a digital micro-mirror device (digital micro-mirror device, DMD), a silicon-on-silicon panel (liquid-crystal-on-silicon panel, LCOS panel), a transmissive liquid crystal panel (transmissive liquid crystal panel) or other appropriate spatial light modulator (spatial light modulator). However, in other embodiments, the image source 110 may also be a self-luminous display, and the image source 110 itself will emit the image light beam C1, and such a self-luminous display is, for example, a light-emitting diode array display, an organic light-emitting diode array display, a field Emissive displays, plasmonic displays or other suitable self-luminous displays.

Referring to FIG. 1A and FIG. 1B , the projection lens 120 is disposed on the transmission path of the image beam C1 . The projection lens 120 may include a plurality of lenses 122 and an aperture stop 124 . Through the projection lens 120 , the image beam C1 can be projected on the beam splitting module 130 , wherein the aperture stop 124 can control the light quantity of the image beam C1 projected on the beam splitting module 130 .

The spectroscopic module 130 is disposed on the transmission path of the image beam C1 behind the projection lens 120 , that is, the projection lens 120 is disposed on the transmission path of the image beam C1 between the spectroscopic module 130 and the image source 110 . In detail, the first sub-image beam 112 passes through the spectroscopic module 130 and is projected on the first imaging plane 10B. In this embodiment, the first sub-image beam 112 is projected onto the first imaging surface 10B along the optical axis C ₁₂₀ of the projection lens 120 , for example, but the invention is not limited thereto. In addition, the second sub-image beams 114a and 114b are reflected by the spectroscopic module 130 and projected on the second imaging planes 10A and 10C respectively, and the first imaging plane 10B is not coplanar with the second imaging planes 10A and 10C; An imaging surface 10B, the second imaging surface 10A and 10C are planes as an example, the normal vector of any one of the first imaging surface 10B, the second imaging surface 10A and 10C may not be parallel to any other normal vector; that is, The normal vectors of any two of the first imaging plane 10B, the second imaging planes 10A and 10C may not be parallel. However, in other embodiments, the first imaging surface 10B, the second imaging surface 10A or 10C may also be a curved surface. In addition, the first imaging plane 10B, the second imaging planes 10A and 10C can be projected on adjacent screens, so that the images displayed on the first imaging plane 10B, the second imaging planes 10A and 10C can be adjacent to each other. Alternatively, the first imaging plane 10B, the second imaging planes 10A and 10C may also be projected on non-adjacent screens, so that the images displayed on the first imaging plane 10B, the second imaging planes 10A and 10C are separated from each other. It should be noted that this embodiment does not limit the number of second imaging surfaces, that is, when the beam splitting module 130 reflects the image beam C1 into a plurality of second sub-image beams, these second sub-image beams will be split The module 130 is reflected and projected on multiple second imaging planes other than the first imaging plane, and at least part of the second imaging planes will not be coplanar with the first imaging plane.

FIG. 1D shows a partially enlarged schematic diagram of the optical splitting module in FIG. 1A . 1A and 1D, the light splitting module 130 may include at least one reflector, here reflectors 130-1 to 130-4 are taken as an example, wherein the reflectors 130-1 and 130-3 are arranged on the second sub-image beam 114a to change the transmission direction of the second sub-image beam 114a, and the reflectors 130-2 and 130-4 are arranged on the transmission path of the second sub-image beam 114b to change the direction of the second sub-image beam 114b. Pass direction. In this embodiment, the reflector is, for example, a mirror, but is not limited thereto. In addition, although four reflectors are shown in FIG. 1A as an example in this embodiment, the number of reflectors is not limited in this embodiment. One or more reflectors are included to change the transmission path of the second sub-image light beam.

In addition, the spectroscopic module 130 of this embodiment can also optionally include at least one lens group, here taking the lens groups 142-1 and 142-2 as examples, wherein the lens group 142-1 is disposed on the second sub-image beam 114a On the transmission path, the lens group 142 - 2 is disposed on the transmission path of the second sub-image light beam 114 b, and the lens groups 142 - 1 and 142 - 2 may include a plurality of lenses 140 respectively. In this embodiment, the lens groups 142-1 and 142-2 (the lens group 142-2 shown in FIG. 1D ) can adjust the second sub-image beams 114a and 114b (the second sub-image as shown in FIG. 1D ) respectively. The light beam 114b) is projected from the projection lens 120 and transmitted to the reflectors 130-1 to 130-4, so that the magnification of the projection on the second imaging plane 10A and 10C can be adjusted, and the optical performance of the projection device 100 can also be compensated. . In addition, although this embodiment shows two lens groups as an example in FIG. 1A, and three lenses are shown in each lens group as an example, but this embodiment does not limit the number of lens groups and the number of lens groups in the lens group. The number of lenses.

It is worth mentioning that the light splitting module 130 of this embodiment is, for example, a movable (movable) light splitting module. That is to say, when the screen used to display the second imaging surfaces 10A and 10C moves, the reflectors 130 - 1 to 130 - 4 in the light splitting module 130 can move synchronously with the screen. For example, when the second imaging plane 10A rotates in the counterclockwise direction, the reflectors 130-1 and/or 130-3 can also rotate simultaneously, so that the second sub-image beam 114a can be projected on the counterclockwise rotating The second imaging surface 10A; similarly, when the second imaging surface 10C rotates clockwise, the reflector 130-2 and/or 130-4 can also rotate simultaneously, so that the second sub-image beam 114b can be projected on the following Clockwise rotation of the second imaging surface 10C. In this way, when the second imaging planes 10A and 10C are not coplanar, the spectroscopic module 130 can adjust the configurations of the reflectors 130-1 to 130-4 accordingly, so that the second sub-image beams 114a and 114b are divided by the spectroscopic module 130 is reflected and projected on the second imaging surfaces 10A and 10C respectively.

It is also worth mentioning that since the projection device 100A of this embodiment projects the first sub-image beam 112 in the image beam C1 onto the first imaging plane 10B, the beam splitting module 130 can project the second sub-image beam 112 in the image beam C1. The sub-image beams 114a and 114b are respectively reflected to the second imaging planes 10A and 10C which are not coplanar with the first imaging plane 10B. Therefore, the projection device 100A can project a plurality of image frames that are not in the same plane, thereby providing users with richer visual enjoyment.

For example, FIG. 1E is a schematic diagram illustrating an image projected by a display projection device according to an embodiment of the present invention. Please refer to FIG. 1A and FIG. 1E , the first imaging surface 10B projected by the projection device 100A is, for example, located on the screen _MB , the second imaging surface 10A is, for example, located on the screen _MA , and the second imaging surface 10C is, for example, is located on the screen M _C. In this embodiment, since the first sub-image beam 112, the second sub-image beam 114a and 114b in the image beam C1 are projected onto the screens M _B , M _A and M _C by the projection lens 120 respectively, they are located on the screen M _B The first imaging surface 10B on the screen can present a part of the image source, and the second imaging surface _10A and the second imaging surface 10C on the screens _MA and MC can respectively present another part of the image source. In addition, since the first imaging plane 10B and the second imaging planes 10A and 10C are not coplanar, the screens _{MA and M C can} display pictures according to different angles. In this way, for the observer E, the observer E can respectively see partial images in the same overall frame from the screens _{MA , M B and} M _C .

On the other hand, when the image source 110 provides multiple individual frames, the first sub-image beam 112, the second sub-image beams 114a and 114b can respectively project different individual frames to the projection lens 120, wherein the spectroscopic module 130 can The first sub-image beam 112, the second sub-image beam 114a and 114b are respectively projected on the screens M _B , M _A and M _C along different transmission directions, so that the first imaging surface 10B on the screen M _B and the first imaging plane 10B on the screen M The second imaging surface 10A and the second imaging surface 10C on _A and _MC can display corresponding individual frames respectively. In particular, as shown in FIG. 1F , observers E1 , E2 , and E3 at different positions can watch different individual images displayed on the screens _{MA , M B , and M C from different} angles.

Based on the above, in the projection device 100A of this embodiment, the beam splitting module 130 can divide the image beam C1 into the first sub-image beam 112 and the second sub-image beams 114a and 114b, wherein the first sub-image passing through the beam splitting module 130 The light beam 112 can be projected on the first imaging surface 10B along the optical axis C ₁₂₀ of the projection lens 120, and the light splitting module 130 can change the transmission direction of the second sub-image beams 114a and 114b, so that the second sub-image beams 114a and 114b Projected on the second imaging planes 10A and 10C located on both sides of the first imaging plane 10B. However, in other embodiments, the spectroscopic module 130 can change the transmission direction of the first sub-image beam 112 so that the first sub-image beam 112 is projected on a position not located on the extension line of the optical axis C ₁₂₀ of the projection lens 120 . For example, the beam splitting module divides the image beam into two sub-image beams, and the transmission directions of the two sub-image beams can be changed by the beam splitting module to be projected on two imaging planes that are not coplanar. In this way, in this embodiment, one projecting device 100A can be used to project a spliced picture composed of multiple pictures, and the pictures may not be coplanar, so that the projecting device in this embodiment can project at low cost Multiple screens can be displayed and more diverse visual enjoyment can be provided for users.

In order for those skilled in the art to further understand the projection device of this embodiment, various embodiments are listed below for detailed description, wherein the image source and projection lens in the projection device are similar to the components of the embodiment in Figure 1A, so the following No longer.

FIG. 2 is a schematic diagram of a projection device according to another embodiment of the present invention. Please refer to FIG. 2 and FIG. 1A, the projection device 100B of this embodiment is similar to the projection device 100A of FIG. 114b is located between the projection lens 120 and the second imaging surface 10C, and the lens group 144 is, for example, disposed between the reflectors 130-2 and 130-4. In this way, the optical path length of the second sub-image beam 114b can be extended to adjust the magnification of the second imaging surface 10C. In addition, the reflector 130-3 is disposed between the reflector 130-1 and the second imaging surface 10A, and the reflector 130-3 is disposed on the transmission path of the second sub-image beam 114a. Accordingly, in this embodiment, the optical path length of the second sub-image beam 114 a between the reflector 130 - 1 and the second imaging surface 10A can be increased, so as to adjust the magnification of the second imaging surface 10A. In this way, under the cooperation of the reflectors 130-1 to 103-4 and the lens group 144, the normal vectors of the first imaging plane 10B, the second imaging planes 10A and 10C may not be parallel, and the first imaging plane 10B , The second imaging planes 10A and 10C may not be coplanar. It should be noted that in this embodiment, although a lens group 144 and its two lenses 140 are shown in FIG. 2 as an example, this embodiment does not limit the number of lens groups and lenses between each reflector. For example, a plurality of lens groups having different numbers of lenses may be arranged between each reflector. In addition, this embodiment does not limit the disposition positions of the lens groups. For example, when the spectroscopic module 130 includes other reflectors, this embodiment may also arrange multiple lens groups between other reflectors.

FIG. 3 is a schematic diagram of a projection device according to another embodiment of the present invention. Please refer to FIG. 3 and FIG. 1A, the projection device 100C of this embodiment is similar to the projection device 100A of FIG. 130-5 and 130-6, wherein the reflector 130-5 is arranged on the transmission path of the second sub-image beam 114a, and is located between the reflector 130-3 and the second imaging surface 10A, and the reflector 130-6 is arranged On the transmission path of the second sub-image light beam 114b, and between the reflector 130-4 and the second imaging surface 10C. In this embodiment, the second sub-image beam 114a can be reflected by the reflectors 130-1, 103-3, and 103-5 to be projected on the second imaging surface 10A in sequence, and the second sub-image beam 114b can be sequentially passed through Reflected by the reflectors 130 - 2 , 103 - 4 and 103 - 6 , it is projected on the second imaging plane 10C, and the first sub-image beam 112 can pass through the spectroscopic module 130 and be projected on the first imaging plane 10B. The second imaging planes 10A and 10C are located between the projection lens 120 and the first imaging plane 10B, and the second imaging planes 10A, 10C and the first imaging plane 10B may be located on different planes. In this way, by changing the configuration of the reflectors 130-1 to 130-6 in the spectroscopic module 130, the second sub-image beams 114a and 114b can be projected on the second imaging surfaces 10A and 10C according to different optical paths, thereby , the second imaging planes 10A and 10C may be located on different planes, and the second imaging planes 10A and 10C may not be coplanar with the first imaging plane 10B.

FIG. 4 is a schematic diagram of a projection device according to another embodiment of the present invention. Please refer to FIG. 4 and FIG. 3, the projection device 100D of this embodiment is similar to the projection device 100C of FIG. lens 150, but this embodiment does not limit the number of lenses. The lens group 152 is disposed on the transmission path of the first sub-image light beam 112 and is located between the projection lens 120 and the first imaging surface 10B. In this embodiment, the lens group 150, for example, can adjust the optical path length of the first sub-image beam 112 projected on the first imaging surface 10B along the optical axis C ₁₂₀ of the projection lens 120, so as to adjust the magnification of the first imaging surface 10B. magnification. For example, the lens group 150 can shorten the optical path length of the first sub-image beam 112 so that the first imaging surface 10B is closer to the projection lens 120 than the second imaging surfaces 10A, 10C. In this way, under the cooperation of the reflectors 130 - 1 to 103 - 6 and the lens group 150 , the first imaging surface 10B and the second imaging surfaces 10A and 10C may also be located on different planes. However, in other embodiments, through the arrangement of the lens group 150 , the first sub-image beam 112 may not be projected on the first imaging surface 10B along the optical axis C ₁₂₀ of the projection lens 120 .

FIG. 5 is a schematic diagram of a projection device according to another embodiment of the present invention. Please refer to FIG. 4 and FIG. 5, the projection device 100E of this embodiment is similar to the projection device 100D of FIG. 7 is arranged on the transmission path of the second sub-image beam 114a, and is located between the reflector 130-3 and the second imaging surface 10A. In this embodiment, the second sub-image beam 114a can be reflected by the reflectors 130-1, 103-3, 103-7, and 130-5 in sequence to be projected on the second imaging surface 10A, and the second sub-image beam 114b The first sub-image beam 112 is projected on the first imaging surface 10B by the projection lens 120 through the reflection of the reflectors 130 - 2 , 103 - 4 and 103 - 6 in sequence and projected onto the second imaging surface 10C. It is explained here that the lens group 150 can shorten the optical path length of the first sub-image beam 112, and by changing the configuration of the reflectors 130-1 to 130-7 in the spectroscopic module 130, the second sub-image beams 114a and 114b can be respectively according to Different light paths are projected on the second imaging planes 10A and 10C. In this way, under the cooperation of the lens group 150 and the reflectors 130-1 to 130-7, the first imaging plane 10B, the second imaging planes 10A and 10C can be adjacent to each other, and the second imaging plane 10A and 10C may not be coplanar with the first imaging plane 10B respectively.

To sum up, the projection device of the embodiment of the present invention can achieve at least one of the following advantages: In the projection device of the embodiment of the present invention, the image beam passing through the light splitting module can be divided into the first sub-image beam and at least A second sub-image beam. The first sub-image beam can be projected on the first imaging surface facing the projection lens, and the second sub-image beam can be guided by the light splitting module to a transmission direction different from the first sub-image beam, and projected on both sides of the first imaging surface. At least one second imaging plane on the side, wherein the second imaging plane is not coplanar with the first imaging plane. In this way, this embodiment can use one projection device to generate a spliced picture composed of multiple pictures, and each picture can be located on a different plane, so that the projection device of the embodiment of the present invention can reduce The cost is used to project multiple images and provide users with more diverse visual enjoyment.

The above description is only a preferred embodiment of the present invention, and cannot limit the scope of the present invention. All simple equivalent changes and modifications made according to the claims of the present invention and the content of the invention are still covered by the patent of the present invention. In the range. In addition, any embodiment or claim of the present invention does not need to achieve all the objects or advantages or features disclosed in the present invention. In addition, the abstract and the title are only used to assist the search of patent documents, and are not used to limit the scope of rights of the present invention. In addition, terms such as "first" and "second" mentioned in this specification or the scope of the patent application are only used to name elements (elements) or to distinguish different embodiments or ranges, and are not used to limit the number of elements. upper or lower limit.

Claims (10)

1. A projection device, comprising: an image source providing an image light beam, wherein the image source has a display plane, the display The display plane converts the illuminating beam into the image beam, and different areas of the display plane respectively display different individual pictures, and the image beam includes a first sub-image beam and at least one second sub-image beam, and the first The sub-image beams correspond to a partial area on the display plane, and the second sub-image beams respectively correspond to another partial area on the display plane; The projection lens is arranged on the transmission path of the image beam, and the projection lens converts the first sub-image beam and the second sub-image beam bring together postpartum from; and a spectroscopic module, the first sub-image beam passes through the spectroscopic module and is projected on a first imaging plane, the second sub-image beam is reflected by the spectroscopic module and projected on at least one second imaging plane, and The first imaging surface and the second imaging surface are not coplanar, wherein the projection lens is arranged on the transmission path of the image beam between the spectroscopic module and the image source, and the image beam The first sub-image beam and the at least one second sub-image beam pass through the same projection lens. 2. The projection device according to claim 1, wherein the first imaging surface comprises a curved surface or a plane. 3. The projection device according to claim 1, wherein the second imaging surface comprises a curved surface or a plane. 4. The projection device according to claim 1, further comprising a first lens group, wherein the first lens group is arranged on the transmission path of the first sub-image light beam, and is located in the projection lens and the first imaging surface. 5. The projection device according to claim 1, wherein the spectroscopic module comprises at least one reflector, and the at least one reflector is arranged on the transmission path of the second sub-image light beam to change the The propagation direction of the second sub-image beam. 6. The projection device according to claim 1, wherein the light splitting module comprises: at least one reflector configured on the transmission path of the second sub-image beam to change the transmission direction of the second sub-image beam; and At least one second lens group is arranged on the transmission path of the second sub-image light beam. 7. The projection device according to claim 1, wherein the first imaging plane and the second imaging plane are adjacent to each other. 8. The projection device according to claim 1, wherein the first imaging plane and the second imaging plane are separated from each other. 9. The projection device according to claim 1, wherein the light splitting module is a movable light splitting module. 10. The projection device according to claim 1, wherein the image source comprises: The lighting system is used to provide the lighting beam.